Watching TFA again, some lines about Snoke sound ridiculous. Especially Leia talking about Snoke turning Ben.
We can still presume that Luke lied to Leia about that when he left everything behind ?
But Snoke did turn Ben. He had already seduced Ben before Luke’s moment of weakness.
Some people seem to forget that little detail. It’s not like Kylo decided to go evil after waking up to see Uncle Luke standing there. The Jedi Knight School was doomed either way.